/* ============================
   Variables CSS
   ============================ */
:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --secondary: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    --dark: #1F2937;
    --light: #F9FAFB;
    --border: #E5E7EB;
    --text: #374151;
    --text-light: #6B7280;
    --sidebar-width: 260px;
    --topbar-height: 70px;
}

/* ============================
   Reset & Base
   ============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    color: var(--text);
    background-color: var(--light);
    line-height: 1.6;
}

/* ============================
   Sidebar Navigation
   ============================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: white;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.sidebar-header h2 {
    font-size: 20px;
    color: var(--primary);
    font-weight: 700;
}

.sidebar-menu {
    flex: 1;
    list-style: none;
    padding: 16px 0;
    overflow-y: auto;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar-menu li a:hover {
    background-color: var(--light);
    color: var(--primary);
}

.sidebar-menu li a.active {
    background-color: #EEF2FF;
    color: var(--primary);
    border-left: 3px solid var(--primary);
    font-weight: 600;
}

.sidebar-menu li a i {
    font-size: 18px;
    width: 20px;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 16px 24px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.user-info i {
    font-size: 36px;
    color: var(--text-light);
}

.user-info strong {
    display: block;
    font-size: 14px;
    color: var(--dark);
}

.user-info small {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    text-transform: capitalize;
}

.logout-btn {
    display: block;
    width: 100%;
    padding: 10px 16px;
    background-color: var(--light);
    color: var(--text);
    text-decoration: none;
    border-radius: 6px;
    text-align: center;
    transition: all 0.2s;
}

.logout-btn:hover {
    background-color: var(--danger);
    color: white;
}

/* ============================
   Main Content
   ============================ */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background-color: var(--light);
}

.topbar {
    background: white;
    height: var(--topbar-height);
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar h1 {
    font-size: 24px;
    color: var(--dark);
    font-weight: 700;
}

.company-name {
    color: var(--text-light);
    font-size: 14px;
}

.content {
    padding: 32px;
}

/* ============================
   Alerts
   ============================ */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert i {
    font-size: 20px;
}

.alert-success {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #10B981;
}

.alert-error {
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid var(--danger);
}

.alert-warning {
    background-color: #FEF3C7;
    color: #92400E;
    border: 1px solid var(--warning);
}

/* ============================
   Cards & Stats
   ============================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.primary {
    background-color: #EEF2FF;
    color: var(--primary);
}

.stat-icon.success {
    background-color: #D1FAE5;
    color: var(--secondary);
}

.stat-icon.warning {
    background-color: #FEF3C7;
    color: var(--warning);
}

.stat-icon.danger {
    background-color: #FEE2E2;
    color: var(--danger);
}

.stat-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
}

.stat-content p {
    color: var(--text-light);
    font-size: 14px;
}

.card {
    background: white;
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
}

/* ============================
   Tables
   ============================ */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

thead {
    background-color: var(--light);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
    border-bottom: 2px solid var(--border);
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

tr:hover {
    background-color: var(--light);
}

/* ============================
   Buttons
   ============================ */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    font-size: 14px;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    opacity: 0.9;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-group {
    display: flex;
    gap: 8px;
}

/* ============================
   Forms
   ============================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

select.form-control {
    background-color: white;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* ============================
   Badges
   ============================ */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge-danger {
    background-color: #FEE2E2;
    color: #991B1B;
}

.badge-info {
    background-color: #DBEAFE;
    color: #1E40AF;
}

/* ============================
   Auth Layout
   ============================ */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 20px;
}

.auth-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    width: 100%;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header .logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    border-radius: 16px;
}

.auth-header h1 {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-light);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}